The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2014
Filed:
Oct. 16, 2012
Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;
Takeshi Shinomiya, Hitachinaka, JP;
Yuichiro Nozaki, Hitachinaka, JP;
Masafumi Makino, Tokyo, JP;
Masaomi Konishide, Tsuchiura, JP;
Yasuhiko Kono, Hitachinaka, JP;
Tetsuo Kojima, Hitachinaka, JP;
Tetsu Sugiura, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Semiconductor element groups constituting a unit are mounted on a cooler heat receiving parton the same plane and are adapted to radiate heat by self-cooling or cooling by wind. First and fourth semiconductor elements Q, Qare arranged on the lower side of the cooler heat receiving part, second and third semiconductor elements Q, Qare arranged in the middle, a first diode Dand a second diode Dare arranged on the upper side, the first and second semiconductor elements Q, Q, as well as the third and fourth semiconductor elements Q, Qare each arranged in positions opposite to each other in a horizontal direction with respect to a centerline of a cooler in a vertical direction.